Astronomy Picture of the Day

   [1]Discover the cosmos! Each day a different image or photograph of our
      fascinating universe is featured, along with a brief explanation
                    written by a professional astronomer.

                               2024 December 1
      [2]There is no obvious picture. There is just a background with a
      single color. This color, a type of off-white or beige, is called
   cosmic latte. Please see the explanation for more detailed information.

               Cosmic Latte: The Average Color of the Universe
      Image Color Credit: [3]Karl Glazebrook & [4]Ivan Baldry ([5]JHU)

   Explanation: What color is the universe? More precisely, if the
   [6]entire sky were smeared out, what color would the final mix be? This
   whimsical [7]question came up when trying to determine what stars are
   commonplace in nearby galaxies. The answer, depicted here, is a
   [8]conditionally perceived shade of [9]beige. In computer parlance:
   #[10]FFF8E7. To determine this, astronomers computationally averaged
   the light emitted by one of the larger samples of [11]galaxies
   analyzed: the 200,000 [12]galaxies of the [13]2dF Galaxy Redshift
   Survey. The resulting [14]cosmic spectrum has some emission in all
   parts of the [15]electromagnetic spectrum, but a single perceived
   composite color. [16]This color has become much less blue over [17]the
   past 10 billion years, indicating that redder stars are becoming
   [18]more prevalent. In a [19]contest to better name the color, notable
   entries included skyvory, univeige, and the winner: [20]cosmic latte.

                     Tomorrow's picture: galaxy of stars
     __________________________________________________________________

      [21]< | [22]Archive | [23]Submissions | [24]Index | [25]Search |
   [26]Calendar | [27]RSS | [28]Education | [29]About APOD | [30]Discuss |
                                    [31]>
     __________________________________________________________________

    Authors & editors: [32]Robert Nemiroff ([33]MTU) & [34]Jerry Bonnell
                                 ([35]UMCP)
          NASA Official: Amber Straughn [36]Specific rights apply.
            [37]NASA Web Privacy, [38]Accessibility, [39]Notices;
                A service of: [40]ASD at [41]NASA / [42]GSFC,
                         [43]NASA Science Activation
                           & [44]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2412/CosmicLatte_jhu_960.jpg
   3. https://en.wikipedia.org/wiki/Karl_Glazebrook
   4. https://www.astro.ljmu.ac.uk/~ikb/
   5. https://physics-astronomy.jhu.edu/
   6. https://apod.nasa.gov/apod/ap020310.html
   7. http://sten.astronomycafe.net/faqs/
   8. https://www.aao.org/eye-health/tips-prevention/how-humans-see-in-color
   9. http://en.wikipedia.org/wiki/Beige
  10. https://www.color-hex.com/color/fff8e7
  11. https://apod.nasa.gov/apod/ap071007.html
  12. https://apod.nasa.gov/apod/ap010904.html
  13. https://en.wikipedia.org/wiki/2dF_Galaxy_Redshift_Survey
  14. https://ui.adsabs.harvard.edu/abs/2002ApJ...569..582B/abstract
  15. https://science.nasa.gov/ems/01_intro
  16. https://www.curiositybox.com/blogs/inqs-corner/cosmic-latte-the-average-color-of-the-universe
  17. https://apod.nasa.gov/apod/ap180508.html
  18. https://www.reddit.com/media?url=https://i.redd.it/prm50mltnj4d1.jpeg
  19. https://en.wikipedia.org/wiki/Cosmic_latte#Naming_the_color
  20. https://en.wikipedia.org/wiki/Cosmic_latte
  21. https://apod.nasa.gov/apod/ap241130.html
  22. https://apod.nasa.gov/apod/archivepix.html
  23. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  24. https://apod.nasa.gov/apod/lib/aptree.html
  25. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  26. https://apod.nasa.gov/apod/calendar/allyears.html
  27. https://apod.com/feed.rss
  28. https://apod.nasa.gov/apod/lib/edlinks.html
  29. https://apod.nasa.gov/apod/lib/about_apod.html
  30. https://asterisk.apod.com/discuss_apod.php?date=241201
  31. https://apod.nasa.gov/apod/ap241202.html
  32. http://www.phy.mtu.edu/faculty/Nemiroff.html
  33. http://www.phy.mtu.edu/
  34. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  35. http://www.astro.umd.edu/
  36. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  37. https://www.nasa.gov/about/highlights/HP_Privacy.html
  38. https://www.nasa.gov/general/accessibility/
  39. https://www.nasa.gov/privacy/
  40. https://astrophysics.gsfc.nasa.gov/
  41. https://www.nasa.gov/
  42. https://www.nasa.gov/centers/goddard/
  43. https://science.nasa.gov/learners
  44. http://www.mtu.edu/